RE: Agree...
Tricia - from the "old" Method series, I only have the "All in One" work-out. Lakey does the warm-up, Alexandra does the aerobic/weight section, and Jennifer ends with the pilates work. I've rented Precision Toning from the library. The pilates work from these two tapes is comparable. And truthfully, I tend to use only the pilates section as an add-on after I've done another work-out.
I have the new 3-D and Precision Pilates tapes. I agree that there's really nothing new here, but Jennifer does lead both of these. She does have some background exercises on some of the sections (all people that you'd recognize from the previous series). I've just recently purchased these two tapes, but so far, I prefer the 3-D tape. But I do like Jennifer, and I do love how I feel (strong and tall) after I do her work-outs. I think she gives clear instruction on positioning and breathing.
Now to address your question of choosing old or new - that really is tough. You wouldn't go wrong either way, but it is hard for us "vidiots" to pass up new material! You can check out the "previews" on the Collage web site, if that might be helpful. You can download the RealTime player for free if you don't have it already.